The charts for PM2.5 and NO2 show no clear connection between the size of a population and pollution levels. Bangladesh (eighth in population) has the highest PM2.5 levels at ~70 μg/m³, while larger countries like India and China (~40 μg/m³) show moderate levels. The United States (third) and Russia (ninth) have lower PM2.5 levels of around 20 μg/m³. For NO2, levels are generally lower, with India (~30 μg/m³) and China (~25 μg/m³) peaking despite their population size, while smaller countries like Bangladesh and Russia (~15 μg/m³) show less variation. This suggests that local factors like industrial activity or air pollution from cities are more important than the size of the population.